philipnee commented on code in PR #13303:
URL: https://github.com/apache/kafka/pull/13303#discussion_r1125607022


##########
clients/src/main/java/org/apache/kafka/clients/consumer/internals/PrototypeAsyncConsumer.java:
##########
@@ -226,11 +246,20 @@ public void commitAsync(OffsetCommitCallback callback) {
 
     @Override
     public void commitAsync(Map<TopicPartition, OffsetAndMetadata> offsets, 
OffsetCommitCallback callback) {
-        final CommitApplicationEvent commitEvent = new 
CommitApplicationEvent(offsets);
-        commitEvent.future().whenComplete((r, t) -> {
-            callback.onComplete(offsets, new RuntimeException(t));
+        CompletableFuture<Void> future = commit(offsets);
+        future.whenComplete((r, t) -> {
+            if (t != null) {
+                callback.onComplete(offsets, new RuntimeException(t));
+            } else {
+                callback.onComplete(offsets, null);
+            }
         });
+    }
+
+    private CompletableFuture<Void> commit(Map<TopicPartition, 
OffsetAndMetadata> offsets) {

Review Comment:
   I have a KIP proposal here: 
   1. WDYT about asyncCommit returning a CompletableFuture?
   2. WDYT about poll returning CompletableFuture?



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